Re: [Chrysler300] Lifter lash

[Mike Apfelbeck <moparmike@xxxx>]

The rocker shaft bolts should be 50 ft/pounds, 30 ft/pounds is probably 
close enough. What your machinist meant was that when the cylinder is at 
the top of the firing stroke, you should be able to compress the lifter by 
holding pressure on the pushrod end of the rocker until there is a specific 
amount of clearance between the rocker tip and the end of the valve stem. 
This is assuming the lifters aren't already pumped up with oil, if they 
are, you will have to hold pressure on them until they bleed down. The 
clearance needed at the rocker end is usually specified as a 
minimum/maximum value, typically .060" to .120"(If I remember correctly) 
This is the desired range of measurement to allow the hydraulic lifters to 
function correctly. Each cylinder should have, ideally the same measurement 
to have a smooth idle & quiet operation. The person who did your valve job 
should have set the "valve height" when he did the job, which is to grind 
the end of the valve stems off until they are all the same height compared 
to each other.

Mike

At 03:02 PM 1/26/2003 -0800, jennifer allyn wrote:
> Putting together a 1962 413 (though the block and heads are actually
> 1964).
>
> The rockers are non-adjustable.
>
> I have installed new lifters, pushrods, rocker arms, and rocker shafts.
>
> I have just tightened down the rocker shaft bolts to 30 pounds.
>
> Engine is currently at TDC.
>
> My machinist said at this point I should have some movement with the #1
> push rods.
>
> What I have is very, very little movement, though the pushrods can spin,
> but there is little up & down movement.
>
>
>
> Am I fine or am I screwed?
>
>
>
> Thanks!
>
> Matt Allyn
>
>
>
> [Non-text portions of this message have been removed]
>
>
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